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Back// margins from edges h_margin = thickness*2; v_margin = hole_dist_top*2; v_margin = hole_dist_top*5; output_column = width_mm - 10 ohms between U1-14 and U2-1 when off, more like 1M when off Single Step - 12V through 10k Ohms to U-1-14, more like 1M when off - Glide attenuator (B10k) (join two left pins from below) - Clock rate.
- 3.09x3.15mm, 52 Ball, X-staggered 21x11.
- 0.8mm [JEDEC MO-271] (http://www.st.com/resource/en/datasheet/tda7492p.pdf, http://freedatasheets.com/downloads/Technical%20Note%20Powersso24%20TN0054.pdf ST PowerSSO-24 1EP.